java压缩与解压缩文件

http://www.oschina.net/code/snippet_2482052_54816

package com.yabushan.test.util.upload;
 
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.apache.tools.zip.ZipOutputStream;
import org.slf4j.LoggerFactory;
 
public class ZipUtil {
    protected static final org.slf4j.Logger log = LoggerFactory.getLogger(ZipUtil.class);
    private static final int BUFFER = 2048;
 
    /**
     * 解压文件到指定路径
     * 
     * @param filePath
     * @param upZipPath
     * @return 返回解压的文件集合
     */
    public static List<File> unZip(String filePath, String upZipPath) {
        List<File> list = new ArrayList<File>();
        int count = -1;
        File file = null;
        InputStream is = null;
        FileOutputStream fos = null;
        BufferedOutputStream bos = null;
 
        // 生成指定的保存目录
        String savePath = upZipPath;
        if (!new File(savePath).exists()) {
            new File(savePath).mkdirs();
        }
 
        try {
            ZipFile zipFile = new ZipFile(filePath, "GBK");
            Enumeration enu = zipFile.getEntries();
            while (enu.hasMoreElements()) {
                ZipEntry zipEntry = (ZipEntry) enu.nextElement();
                if (zipEntry.isDirectory()) {
                    new File(savePath + "/" + zipEntry.getName()).mkdirs();
                    continue;
                }
                if (zipEntry.getName().indexOf("/") != -1) {
                    new File(savePath
                            + "/"
                            + zipEntry.getName().substring(0,
                                    zipEntry.getName().lastIndexOf("/")))
                            .mkdirs();
                }
                is = zipFile.getInputStream(zipEntry);
                file = new File(savePath + "/" + zipEntry.getName());
                fos = new FileOutputStream(file);
                bos = new BufferedOutputStream(fos, BUFFER);
 
                byte buf[] = new byte[BUFFER];
                while ((count = is.read(buf)) > -1) {
                    bos.write(buf, 0, count);
                }
 
                bos.flush();
                fos.close();
                is.close();
                list.add(file);
            }
 
            zipFile.close();
            return list;
        } catch (IOException ioe) {
            log.error(ioe.getMessage());
            return list;
        }
    }
 
    /**
     * RAR 需要配置rar路径
     * 
     * @param filePath
     * @param unRarPath
     *            路径要唯一，否则获取文件列表会出错
     * @return
     */
    public static int unRar(String filePath, String unRarPath) {
        int result = -99;
        if (!(new File(unRarPath).exists())) {
            new File(unRarPath).mkdirs();
        }
        try {
            //String cmd = GlobalConfig.getConfigValue("cmd.path");
            String cmd="test";
            String unrarCmd = cmd + " e -r -o+ " + filePath + " " + unRarPath;
            Runtime rt = Runtime.getRuntime();
 
            Process pre = rt.exec(unrarCmd);
            while(result==-99){
            try {
                Thread.sleep(1000L);
                result = pre.exitValue();
            } catch (Exception e) {
                // TODO: handle exception
                result = -99;
            }
            }
            InputStreamReader isr = new InputStreamReader(pre.getInputStream());
            BufferedReader bf = new BufferedReader(isr);
            String line = null;
            while ((line = bf.readLine()) != null) {
                line = line.trim();
                if ("".equals(line)) {
                    continue;
                }
                log.info(line);
            }
            bf.close();
            if (result != 0) {
                log.error("unRar " + pre.exitValue());
            }
            // 杀死进程 退出
            // pre.destroy();
            return result;
        } catch (Exception e) {
            log.error(e.getMessage() + ": " + e.getStackTrace());
            return -2;
        }
    }
 
    /***
     * 将多个文件打成压缩包
     * 
     * @param list
     *            需打包的文件路径集合
     * @param zipfilename
     *            压缩包名称
     */
    public static void listToZip(List<String> list, String zipfilename) {
        FileInputStream is = null;
        String path = "";
        File file = null;
        ZipOutputStream zos = null;
        try {
            if (list != null && list.size() > 0) {
                //String uri = GlobalConfig.getConfigValue("zipFile.path");
                String uri="D:/ZIP";
                File f = new File(uri);
                if(!f.exists()){
                    f.mkdirs();
                }
                zipfilename = uri + zipfilename;
                //创建zip文件输出流
                zos = new ZipOutputStream(new FileOutputStream(new File(
                        zipfilename)));
                zos.setEncoding("GBK");
                for (int i = 0; i < list.size(); i++) {
                    path = list.get(i);
                    file = new File(path);
                    if (file.exists()) {
                        //创建源文件输入流
                        is = new FileInputStream(file);
                        zos.putNextEntry(new ZipEntry(file.getName()));
                        byte[] buf = new byte[BUFFER];
                        int length = -1;
                        while ((length = is.read(buf)) != -1) {
                            zos.write(buf, 0, length);
                            zos.flush();
                        }
                        zos.closeEntry();
                        is.close();
                    } else {
                        System.out.println("源文件不存在");
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (is != null) {
                    is.close();
                }
                if (zos != null) {
                    zos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
 
        }
 
    }
    /***
     * 将多个文件打成压缩包(压缩包内文件名称由参数中传入)
     * 
     * @param list
     *            需打包的文件信息集合
     * @param zipfilename
     *            压缩包名称
     */
    public static void listMapToZip(List<Map<String,Object>> list, String zipfilename) {
        FileInputStream is = null;
        String path = "";
        File file = null;
        ZipOutputStream zos = null;
        try {
            if (list != null && list.size() > 0) {
                //String uri = GlobalConfig.getConfigValue("zipFile.path");
                String uri="D:/ZIP";
                File f = new File(uri);
                if(!f.exists()){
                    f.mkdirs();
                }
                zipfilename = uri + zipfilename;
                //创建zip文件输出流
                zos = new ZipOutputStream(new FileOutputStream(new File(
                        zipfilename)));
                zos.setEncoding("GBK");
                for (Map map : list) {
                    path = map.get("filePath")+"";
                    file = new File(path);
                    if (file.exists()) {
                        //创建源文件输入流
                        is = new FileInputStream(file);
                        zos.putNextEntry(new ZipEntry(map.get("fileName")+""));
                        byte[] buf = new byte[BUFFER];
                        int length = -1;
                        while ((length = is.read(buf)) != -1) {
                            zos.write(buf, 0, length);
                            zos.flush();
                        }
                        zos.closeEntry();
                        is.close();
                    } else {
                        System.out.println("源文件不存在");
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (is != null) {
                    is.close();
                }
                if (zos != null) {
                    zos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
 
        }
 
    }
    public static void main(String[] args) throws Exception {
        List<String> list = new ArrayList<String>();
        list.add("D:/File/img/tempImg/7f7ffd45856be6aa.txt");
        list.add("D:/File/img/tempImg/63f8959465093ec0.jpeg");
        list.add("D:/File/img/tempImg/815b476dc8cf790e.txt");
        list.add("D:/File/img/tempImg/4451519220dad91a.txt");
        //ZipUtil.listToZip(list, "测试.zip");
         
        System.out.println(ZipUtil.unZip("D:/ZIP测试.zip", "D:/ZIP/bb/").toString());
         
         
    }
}